Brienzersee-Schulhaus is a freshwater dive site in Lake Thun, Switzerland, featuring a combination of natural and artificial reef structures. The site is suitable for beginners, with depths ranging from 5 to 30 metres and an average depth of 15 metres. Shore entry provides straightforward access, and the site is generally free of currents. Visibility typically spans 5 to 15 metres. Divers should be prepared for cold water conditions, which persist year-round in this Alpine lake. Adequate thermal protection, such as a thick wetsuit or drysuit, is required for all dives. Typical dive duration is approximately 40 minutes.

Brienzersee-Ehem Seepolizei is a freshwater wall and reef site located in Lake Thun. Divers can expect depths between 20 and 40 metres, with an average depth of 28 metres. Visibility typically ranges from 5 to 10 metres. The site requires intermediate skill levels due to the significant depth and cold water temperatures, which fluctuate from 4°C in winter to 20°C in summer. Entry is via the shore. Divers should use appropriate thermal protection, such as a drysuit or a 7mm wetsuit with gloves, to manage the cold. The site features a wall and reef structure that supports various temperate freshwater fish and invertebrates.

Brienzersee-Schifflaende is a freshwater shore dive located in Lake Thun, Switzerland. The site features a reef structure that reaches depths between 20 and 30 metres. Divers can expect visibility ranging from 5 to 15 metres. With no current to manage, the site is well-suited for beginners looking to practice buoyancy in a calm environment. The water temperature varies significantly by season, ranging from 4 to 8 degrees Celsius in winter and 15 to 20 degrees Celsius during the summer months. Entry is straightforward directly from the shore, and typical dives last approximately 40 minutes.

Schneckeninsel in Lake Thun features a combination of artificial reef structures and natural reef terrain. Located 250 metres from the shore, this site offers a depth range of 20 to 40 metres, suitable for intermediate divers. Divers access the site via a shore entry. Visibility typically ranges between 5 and 15 metres, though it may vary based on conditions. Due to the significant depth and cold freshwater temperatures, a drysuit is recommended for thermal protection. Divers should monitor bottom time closely and be prepared for variable visibility during the descent. A typical dive duration is approximately 40 minutes.

Neuhaus Swimming Steps provide shore access to a shallow, rocky shelf at the eastern end of Lake Thun. This site is suitable for beginners, offering a depth range of 1 to 2 metres with an average of 1 metre. Snorkellers can expect mild currents and visibility typically ranging between 5 and 15 metres. Water temperatures are cool, measuring 8 to 12°C in April, and may remain low even during summer months. Due to the cold water, extended exposure can cause discomfort, and water shoes are recommended for the rocky entry. Facilities at the site include parking, toilets, showers, and changing rooms.

Parkplatz in Lake Thun offers a freshwater wall and reef experience suited for intermediate divers. The site features a steep profile descending from 20 to 40 metres, with an average depth of 25 metres. Visibility typically ranges between 5 and 15 metres. Entry is via the shore, and the lack of current makes navigation straightforward. Due to the significant depth and cold water, which can drop to 4°C in winter, thermal protection such as a drysuit or a 7mm wetsuit is essential. Divers should monitor their depth closely to manage the risk of nitrogen narcosis and account for increased air consumption in cold conditions.

Baetterichhoehle is a shore-entry freshwater dive site located in Lake Thun. The topography consists of deep water, with depths ranging between 60 and 80 metres. Divers should expect visibility of approximately 5 metres, which requires careful navigation. The site is characterised by an absence of current, assisting with buoyancy control during the descent and ascent. Given the significant depth, this site is intended for experienced divers with appropriate technical certification. Divers are advised to check locally for facility availability and site conditions before arrival, as these can vary.

Därligen is a shore-entry dive site located on the banks of Lake Thun in the Bernese Oberland. The site is characterised by a shallow reef structure that allows for relaxed diving and skill practice. Because the depth remains shallow throughout the area, it is well-suited for divers who are just starting out. Access is direct from the shore, removing the need for a boat. Visibility at this location is variable, and conditions can differ between visits. Divers should check locally for current facility availability before heading out, as amenities may change seasonally. Visiting on a calm, overcast day can help reduce surface glare.